CN110531572B

CN110531572B - Optical element adjusting mechanism and projection device

Info

Publication number: CN110531572B
Application number: CN201810500657.2A
Authority: CN
Inventors: 许焜程
Original assignee: Coretronic Corp
Current assignee: Coretronic Corp
Priority date: 2018-05-23
Filing date: 2018-05-23
Publication date: 2021-05-11
Anticipated expiration: 2038-05-23
Also published as: CN110531572A

Abstract

An optical element adjustment mechanism is as follows. The carrier is arranged in the casing. The optical element is carried on the carrier. The carrier has two opposite cam portions and a top located between the two cam portions. The two cam portions are arranged along the first axial direction. The first adjustment member and the second adjustment member are respectively disposed on opposite sides of the carrier and abut against the two cam portions to push the carrier and the optical element to move along the second axis, the first axis being perpendicular to the second axis . The third adjusting member is disposed above the carrier and abuts against the top to push the carrier and the optical element to rotate along the first axis. A projection device has also been proposed. The optical element adjustment mechanism of the present invention can adjust the optical element to an accurate optimal optical position.

Description

Optical element adjusting mechanism and projection device

Technical Field

The invention relates to an optical element adjusting mechanism and a projection device.

Background

The projection device is a display device for generating a large-sized image, and the imaging principle of the projection device is that an illumination beam provided by a Light source module is guided or adjusted by optical elements such as a wavelength conversion element and a filter element, and then is converted into an image beam by a Light valve (Light Value), and then the image beam is projected to a screen through a projection module such as a projection lens to form an image (the composition of the projection device is not limited). The user can use the projection device and the projection screen to cooperate with the image source to provide the image information for displaying the image picture. Therefore, the projection apparatus plays a very large role in information transmission, and is widely used in many fields.

From the above, it can be known that the relative positions of the various optical elements have a considerable correlation with the imaging effect of the projection apparatus. For example, two light source devices applied to the light source module are substantially vertically arranged, and a light combining element which is substantially inclined at 45 degrees relative to the light source devices is arranged between the two light source devices, so that the two light source devices respectively correspond to two opposite sides of the light combining element, and the light beams emitted by the two light source devices are combined into the same light beam by the light combining element to be used as the illumination light beam. Therefore, when the light source device and the light combining element have manufacturing tolerance or assembling tolerance, and the projection device is not accurately positioned in the assembling process, the problem of poor quality of the imaging effect of the projection device may occur.

The background section is only used to help the understanding of the present invention, and therefore the disclosure in the background section may include some known techniques which do not constitute the knowledge of those skilled in the art. The statements in the "background" section do not represent that matter or the problems which may be solved by one or more embodiments of the present invention, but are known or appreciated by those skilled in the art before filing the present application.

Disclosure of Invention

The invention provides an optical element adjusting mechanism which can adjust an optical element to an accurate optimal optical position.

The invention provides a projection device, which is provided with the optical element adjusting mechanism and can adjust the optical element to an accurate optimal optical position.

Other objects and advantages of the present invention will be further understood from the technical features disclosed in the present invention.

To achieve one or a part of or all of the above or other objects, an embodiment of the present invention provides an optical element adjusting mechanism for adjusting an optical element. The optical element adjustment mechanism includes: the device comprises a shell, a bearing piece, a first adjusting piece, a second adjusting piece and a third adjusting piece. The bearing piece is arranged in the shell. The optical element is carried on the bearing member and allows the light beam to pass through. The bearing piece is provided with two opposite cam parts and a top part positioned between the two cam parts. The two cam portions are arranged along the first axial direction. The first adjusting piece and the second adjusting piece are respectively arranged on two opposite sides of the bearing piece and abut against the two cam parts so as to push the bearing piece and the optical element to move along a second axial direction, and the first axial direction is perpendicular to the second axial direction. The third adjusting member is disposed above the carrier and abuts against the top to push the carrier and the optical element to rotate along the first axial direction.

In order to achieve one or a part of or all of the above or other objects, an embodiment of the invention provides a projection apparatus, which includes a light source module, a light valve and a projection lens. The light source module is used for providing an illumination light beam. The light valve is disposed on the transmission path of the illumination beam to convert the illumination beam into an image beam, and the projection lens is disposed on the transmission path of the image beam. The light source module includes: an optical element, an optical element adjusting mechanism and two light source devices. The optical element adjustment mechanism includes: the device comprises a shell, a bearing piece, a first adjusting piece, a second adjusting piece and a third adjusting piece. The bearing piece is arranged in the shell. The optical element is carried on the bearing piece. The bearing piece is provided with two opposite cam parts and a top part positioned between the two cam parts. The two cam portions are arranged along the first axial direction. The first adjusting piece and the second adjusting piece are respectively arranged on two opposite sides of the bearing piece and abut against the two cam parts so as to push the bearing piece and the optical element to move along a second axial direction, and the first axial direction is perpendicular to the second axial direction. The third adjusting member is disposed above the carrier and abuts against the top to push the carrier and the optical element to rotate along the first axial direction. The two light source devices are arranged on the shell and respectively correspond to two opposite surfaces of the optical element. The two light source devices respectively emit light beams, and the two light beams are combined into the same light beam by the optical element to form an illumination light beam.

Based on the above, the embodiments of the invention have at least one of the following advantages or efficacies. The optical element adjusting mechanism of the embodiment of the invention pushes the bearing member by the adjusting member to enable the bearing member to move or rotate along the corresponding axial direction, so as to adjust the position of the bearing member, and further adjust the optical element borne on the bearing member to the accurate optimal optical position. Furthermore, since the projection apparatus according to the embodiment of the invention includes the optical element adjusting mechanism, the positioning inaccuracy caused by the manufacturing tolerance or the assembling tolerance of the optical element can be improved in the assembling process, and therefore, the projection apparatus according to the embodiment of the invention can adjust the optical element to the precise optimal optical position.

In order to make the aforementioned and other features and advantages of the invention more comprehensible, embodiments accompanied with figures are described in detail below.

Drawings

Fig. 1 is a block diagram of a projection apparatus according to an embodiment of the invention.

Fig. 2 is an exploded view of a light source module applied to the projection apparatus of fig. 1.

Fig. 3 is a perspective view of an optical element adjustment mechanism applied to the light source module of fig. 2.

Fig. 4 to 6 are partial schematic views of the optical element adjustment mechanism of fig. 3.

Detailed Description

The foregoing and other technical and scientific aspects, features and utilities of the present invention will be apparent from the following detailed description of the embodiments, which is to be read in connection with the accompanying drawings. Directional terms as referred to in the following examples, for example: up, down, left, right, front or rear, etc., are referred to only in the direction of the attached drawings. Accordingly, the directional terminology is used for purposes of illustration and is in no way limiting.

Fig. 1 is a block diagram of a projection apparatus according to an embodiment of the invention. Fig. 2 is an exploded view of a light source module applied to the projection apparatus of fig. 1. Referring to fig. 1 and fig. 2, a projection apparatus 200 according to an embodiment of the invention includes a light source module 210, a light valve 220, and a projection lens 230. The light source module 210 is used for providing an illumination beam IL. The light valve 220 is disposed on the transmission path of the illumination beam IL to convert the illumination beam IL into an image beam B, and the projection lens 230 is disposed on the transmission path of the image beam B to convert the image beam B into a projection beam P to be projected out of the projection apparatus 200.

Specifically, the light source module 210 includes: an optical element 212, an optical element adjusting mechanism 100, and two

light source devices

214a and 214 b. The optical element adjusting mechanism 100 is used for adjusting the optical element 212, wherein the optical element 212 is, for example, a light combining element, and is disposed in the optical element adjusting mechanism 100, but not limited thereto. The

Light source devices

214a and 214b are Light source devices including Light Emitting elements such as Laser diodes (Laser diodes), Light Emitting diodes (Light Emitting diodes), Laser Diode arrays, or Light Emitting Diode arrays. In addition, in other embodiments not shown, the light source module may further include optical components such as a wavelength conversion element (e.g., Phosphor Wheel), a light condensing element (e.g., a combination of multiple lenses), a Filter element (e.g., Filter Wheel), and the like. The light valve 220 is, for example, a Digital Micro-mirror Device (DMD) or a Liquid-crystal-on-Silicon (LCOS) Panel. However, in other embodiments, the light valve 220 may be a transmissive liquid crystal panel or other spatial light modulator. The projection lens 230 includes, for example, a combination of one or more optical lenses with diopter, and the optical lenses include, for example, non-planar lenses such as a biconcave lens, a biconvex lens, a concave-convex lens, a convex-concave lens, a plano-convex lens, a plano-concave lens, etc., or various combinations thereof, in this embodiment, the projection lens 230 is used as an example of an imaging system. However, the above description is only an example of the light source module 210, the light valve 220 and the projection lens 230, and the composition of the projection apparatus 200 and the composition of the light source module 210, the light valve 220 and the projection lens 230 can be adjusted according to the requirements, and the invention is not limited thereto.

Fig. 3 is a perspective view of an optical element adjustment mechanism applied to the light source module of fig. 2. Referring to fig. 2 and fig. 3, in an embodiment of the invention, the optical element adjusting mechanism 100 includes: the adjusting apparatus includes a housing 110, a carrier 120, a bracket 130, a first adjusting member 140, a second adjusting member 150, a third adjusting member 160, a fourth adjusting member 170, and a fifth adjusting member 180. The carrier 120 is disposed in the housing 110, the optical element 212 is carried on the carrier 120 and allows the light beam to pass through, and the bracket 130 is disposed in the housing 110 and coupled to the carrier 120. Thus, the optical element 212 is fixed on the carrier 120, so that the position of the optical element 212 in the space can be adjusted by adjusting the position of the carrier 120 in the space, for example, by the first adjusting member 140, the second adjusting member 150, the third adjusting member 160, the fourth adjusting member 170, and the fifth adjusting member 180 pushing the carrier 120 or the bracket 130 coupled to the carrier 120 along the same axial direction. Ideally, the two light source devices 214a and 214b are disposed on two substantially vertical sides of the housing 110, and the supporting member 120 and the light combining element as the optical element 212 are disposed in the housing 110 in an oblique manner with respect to the two light source devices 214a and 214b, preferably at a position substantially inclined at 45 degrees between the two light source devices 214a and 214b, so that the two light source devices 214a and 214b respectively correspond to two opposite sides of the optical element 212, and are intended to combine light beams (not shown) emitted from the two light source devices 214a and 214b into a same light beam by the light combining element as the optical element 212 as the illumination light beam IL as indicated in fig. 1, wherein the optical element 212 is, for example, a light combining element (not shown) configured by a plurality of reflecting regions and a plurality of transmitting regions in an interlaced manner, and the light beams from the light source device 214b can respectively pass through the transmitting regions of the optical element 212 by adjusting the optical element adjusting mechanism 100, the light beams from the light source device 214a can be reflected by the reflective regions of the optical element 212, so that the light beams from the two light source devices 214a and 214b can be accurately guided to the same light path and combined into the illumination light beam IL.

The spatial coordinate systems shown in fig. 2 and 3 are further illustrated, but the description of the spatial coordinate systems is only for illustration and not for limiting the invention.

In the embodiment of the invention, the two

light source devices

214a and 214b can be regarded as being respectively disposed on the XY plane and the YZ plane to be substantially perpendicular, and the optical element adjusting mechanism 100 and the optical element 212 are disposed in the housing 110, wherein the carrier 120 and the optical element 212 can be regarded as being disposed on a plane at a 45-degree position between the XY plane and the YZ plane, and other components of the optical element adjusting mechanism 100 are used for adjusting the positions of the carrier 120 and the optical element 212 in the housing 110. Thus, when the optical element 212 is at the optimal optical position, i.e. at the exact 45 degree position, the light beams (not shown) emitted by the two

light source devices

214a and 214b can be combined by the optical element 212 into the illumination beam IL (as indicated in fig. 1), and then the illumination beam IL can emit the light source module 210 along the X-axis.

Referring to fig. 2 and fig. 3, in the embodiment of the invention, the carrier 120 has two opposite cam portions 122, a top portion 124 located between the two cam portions 122, and two shaft portions 126 extending outward from the two cam portions 122. The two cam portions 122 are disposed on opposite sides of the carrier 120 in a first axial direction (i.e., the Y-axis in fig. 2 and 3). The two cam portions 122 are respectively semicircular, so that the arc surfaces of the cam portions protrude outwards. The top portion 124 is located above the carrier 120 and between the cam portions 122. The two shaft portions 126 extend along a first axial direction (i.e., the Y axis in fig. 2 and 3) and are disposed at opposite sides of the carrier 120, and further extend outward from the two cam portions 122 in the positive Y axis direction and the negative Y axis direction, respectively. The bracket 130 has two opposite slots 132 and two opposite inclined portions 134, and the two inclined portions 134 correspond to the two slots 132. Further, the two locking slots 132 extend along a second axial direction (i.e., the Z-axis in fig. 2 and 3) perpendicular to the first axial direction, and the inclined surfaces (not numbered) of the two inclined portions 134 have an angle with respect to a third axial direction (i.e., the X-axis in fig. 2 and 3). Fig. 2 and 3 only show one of the cam portions 122 and the inclined portion 134 due to the limitation of the view angle, but the number and position thereof will be understood.

As such, by coupling the two shafts 126 extending along the first axial direction (i.e., the Y axis in fig. 2 and 3) to the bracket 130 through the two slots 132 extending along the second axial direction (i.e., the Z axis in fig. 2 and 3), the carrier 120 is allowed to move along the second axial direction (i.e., the Z axis in fig. 2 and 3) or rotate along the first axial direction (i.e., the Y axis in fig. 2 and 3) relative to the bracket 130, and the bracket 130 is allowed to drive the carrier 120 and the optical element 212 to move along a third axial direction (i.e., the X axis in fig. 2 and 3) perpendicular to the first axial direction and the second axial direction relative to the housing 110, as will be described later.

Fig. 4 to 6 are partial schematic views of the optical element adjustment mechanism of fig. 3. The following description will use fig. 2 and fig. 3 to sequentially combine with fig. 4 to fig. 6 to describe an embodiment of the first adjusting member 140, the second adjusting member 150, the third adjusting member 160, the fourth adjusting member 170, and the fifth adjusting member 180 for pushing the carrier 120 and/or the bracket 130.

Referring to fig. 2 to 4, in an embodiment of the invention, the first adjusting member 140 and the second adjusting member 150 of the optical element adjusting mechanism 100 respectively penetrate through the bracket 130 along the second axial direction (i.e., the Z axis in fig. 2 to 4), and are respectively disposed on two opposite sides of the carrier 120 along the second axial direction (i.e., the Z axis in fig. 2 to 4) and abut against the two cam portions 122 of the carrier 120, so as to push the carrier 120 and the optical element 212 to move relative to the bracket 130 and the housing 110 along the second axial direction (i.e., the Z axis in fig. 2 to 4). The first adjusting member 140 and the second adjusting member 150 are screws, for example, and screws (not numbered) of the screws are abutted against the cam portions 122 by rotating the screws, but not limited thereto. Thus, when the first adjusting element 140 and the second adjusting element 150 further move into the bracket 130 and the housing 110, for example, further screw into the bracket 130 along the second axial direction (i.e., the Z axis in fig. 2 to 4), the first adjusting element 140 and the second adjusting element 150 respectively push the two cam portions 122 of the carrier 120, and because the two cam portions 122 are adjacent to the two shaft portions 126 and the two slots 132, the pushed carrier 120 moves along the second axial direction (i.e., the Z axis in fig. 2 to 4) relative to the bracket 130 and the housing 110 based on the position limitation and guidance of the bracket 130, that is, the two shaft portions 126 of the carrier 120 can respectively move along the two slots 132 of the bracket 130 in the second axial direction.

In addition, in the embodiment of the invention, the optical element adjustment mechanism 100 further includes two elastic members E1 and E2, which are correspondingly disposed between two opposite sides of the housing 110 and the carrier 120, and two opposite ends of the elastic member E1 and the elastic member E2 respectively abut against the housing 110 and the carrier 120, and are further disposed at corresponding connection positions of the two cam portions 122 and the two shaft portions 126. The two elastic members E1 and E2 respectively abut against the corresponding joints of the two cam portions 122 and the two shaft portions 126 along the second axial direction (i.e., the Z axis in fig. 2 to 4). Thus, when the first adjusting member 140 and the second adjusting member 150 are further screwed into the bracket 130 along the second axial direction (i.e., the Z axis in fig. 2 to 4), the two elastic members E1 and E2 are pushed by the carrier 120 moving along the second axial direction (i.e., the Z axis in fig. 2 to 4) to be compressed, and when the first adjusting member 140 and the second adjusting member 150 move toward the outside of the bracket 130 along the second axial direction (i.e., the Z axis in fig. 2 to 4), the two elastic members E1 and E2 drive the carrier 120 to move toward the second axial direction (i.e., the Z axis in fig. 2 to 4) by the elastic force obtained by releasing the compression, so that the two cam portions 122 of the carrier 120 are kept abutting against the first adjusting member 140 and the second adjusting member 150. The above description is only an example of the present invention, and the present invention is not limited to the installation position and installation of the two elastic elements E1 and E2, and can be adjusted according to the requirement.

Referring to fig. 2, 3 and 5, in the embodiment of the invention, the third adjusting element 160 penetrates through the bracket 130 along the second axial direction (i.e., the Z axis in fig. 2, 3 and 5), and is disposed above the carrier 120 along the second axial direction (i.e., the Z axis in fig. 2, 3 and 5) and abuts against the top 124 of the carrier 120, so as to push the carrier 120 and the optical element 212 to rotate along the first axial direction (i.e., the Y axis in fig. 2, 3 and 5) relative to the bracket 130 and the housing 110. The third adjusting member 160 is, for example, a screw, but not limited thereto. Thus, when the third adjusting element 160 further moves into the bracket 130 and the housing 110, for example, further screws into the bracket 130 along the second axial direction (i.e., the Z axis in fig. 2, 3 and 5), the third adjusting element 160 pushes the top portion 124 of the carrier 120 along the second axial direction, and since the top portion 124 is separated by the two shaft portions 126 and the two slots 132, the carrier 120 rotates along the first axial direction (i.e., the Y axis in fig. 2, 3 and 5) relative to the bracket 130 and the housing 110 with the two shaft portions 126 as the axis based on the position limitation of the bracket 130 (i.e., the engagement between the two slots 132 and the two shaft portions 126) and the abutting between the housing 110 and the carrier 120 by the elastic elements E1 and E2.

In addition, in the embodiment of the invention, the optical element adjustment mechanism 100 further includes two elastic members E3 and E4, which are correspondingly disposed between the housing 110 and the carrier 120, and are correspondingly disposed on opposite sides of the top portion 124 of the carrier 120, and further may be disposed between the front plate 112 (shown in fig. 2) of the housing 110 and the two fork portions 128 of the carrier 120, wherein the two fork portions 128 are located on opposite sides of the top portion 124 and the third adjustment member 160 and extend along the second axial direction (i.e., the Z axis in fig. 2, 3 and 5). The two elastic members E3 and E4 abut against the two opposite fork portions 128 of the carrier 120 in the third axial direction (i.e., the X-axis in fig. 2, 3, and 5). Thus, when the third adjustment element 160 is further screwed into the bracket 130 along the second axial direction (i.e., the Z-axis in fig. 2, 3 and 5), the two elastic elements E3 and E4 are pushed by the carrier 120 rotating along the first axial direction (i.e., the Y-axis in fig. 2, 3 and 5) to be compressed relative to the two fork portions 128, and when the third adjustment element 160 moves backward along the second axial direction (i.e., the Z-axis in fig. 2, 3 and 5) toward the outside of the bracket 130, the two elastic elements E3 and E4 drive the carrier 120 to rotate backward along the first axial direction (i.e., the Y-axis in fig. 2, 3 and 5) by releasing the elastic force generated by the compression, so that the top portion 124 of the carrier 120 is kept abutting against the third adjustment element 160. The above description is only an example of the present invention, and the present invention is not limited to the installation position and installation of the two elastic elements E3 and E4, and can be adjusted according to the requirement.

Furthermore, since the two cam portions 122 of the carrier 120 have arc surfaces protruding outward, and the first adjusting member 140 and the second adjusting member 150 respectively contact the arc surfaces and abut against the two cam portions 122, when the carrier 120 rotates along the first axial direction (i.e., the Y axis in fig. 2, 3, and 5), the arc surfaces of the two cam portions 122 maintain contact with the first adjusting member 140 and the second adjusting member 150, but do not interfere with the first adjusting member 140 and the second adjusting member 150. That is, by providing the two cam portions 122 as circular arc surfaces, the rotation of the carrier 120 along the first axial direction (i.e., the Y axis in fig. 2, 3 and 5) can be smoother. However, the present invention is not limited to the embodiment of the two cam portions 122, and can be adjusted according to the requirement.

Referring to fig. 2, 3 and 6, in an embodiment of the invention, the fourth adjusting element 170 and the fifth adjusting element 180 are respectively disposed through the housing 110 (e.g., the top plate 114 shown in fig. 2 and 3) along the second axial direction (i.e., the Z axis in fig. 2, 3 and 6), and respectively disposed on two opposite sides of the bracket 130 along the second axial direction (i.e., the Z axis in fig. 2, 3 and 6), and respectively abut against the two inclined portions 134 of the bracket 130, so as to push the bracket 130 to move along the third axial direction (i.e., the X axis in fig. 2, 3 and 6). The fourth adjusting element 170 and the fifth adjusting element 180 are, for example, screws, and screws (not numbered) of the screws respectively abut against the two inclined portions 134 of the bracket 130 by rotating the screws, but not limited thereto. Thus, when the fourth adjusting element 170 and the fifth adjusting element 180 are further moved into the housing 110, for example, further screwed into the housing 110 along the second axis (i.e., the Z axis in fig. 2, 3 and 6), the fourth adjusting element 170 and the fifth adjusting element 180 push the two inclined portions 134 of the bracket 130, so that the bracket 130 moves along the third axis (i.e., the X axis in fig. 2, 3 and 6) relative to the housing 110.

More specifically, in the embodiment of the present invention, the bracket 130 has a limiting hole 136 extending along a third axial direction (i.e., the X axis in fig. 2, 3 and 6). The bracket 130 is connected to the housing 110 (shown in fig. 2) by a fixing member 190 (shown in fig. 2) passing through the top plate 114 of the housing 110 to a limiting hole 136, and the limiting hole 136 allows the bracket 130 to move along a third axial direction (i.e., the X axis in fig. 2, 3 and 6) or rotate along a second axial direction (i.e., the Z axis in fig. 2, 3 and 6) relative to the housing 110. In other words, when the fourth adjusting element 170 and the fifth adjusting element 180 push the two inclined portions 134 of the bracket 130 along the second axial direction (i.e., the Z axis in fig. 2, 3 and 6), the movement of the fourth adjusting element 170 and the fifth adjusting element 180 along the second axial direction (i.e., the Z axis in fig. 2, 3 and 6) is converted into the movement of the bracket 130 along the third axial direction (i.e., the X axis in fig. 2, 3 and 6) by the limiting of the limiting hole 136 by the fixing element 190 and the oblique arrangement of the two inclined portions 134, so that the bracket 130 moves along the third axial direction (i.e., the X axis in fig. 2, 3 and 6) relative to the housing 110. In addition, when the fourth adjusting element 170 and the fifth adjusting element 180 respectively push the two inclined portions 134 of the bracket 130 to move different distances along the third axial direction (i.e., the X axis in fig. 2, 3, and 6) along the second axial direction (i.e., the Z axis in fig. 2, 3, and 6), the bracket 130 drives the carrier 120 and the optical element 212 to rotate along the second axial direction (i.e., the Z axis in fig. 2, 3, and 6) relative to the housing 110, that is, the bracket 130 drives the carrier 120 and the optical element 212 to rotate relative to the housing 110 by using the fixing element 190 as a rotation axis.

In addition, in the embodiment of the invention, the optical element adjusting mechanism 100 further includes two elastic members E5 and E6, which are correspondingly disposed between the opposite sides of the housing 110 and the bracket 130, and further disposed between the front plate 112 (shown in fig. 2) of the housing 110 and the opposite ends 138 (shown in fig. 6) of the bracket 130. The two elastic members E5 and E6 abut against the opposite ends 138 of the carrier 120 in the third axial direction (i.e., the X-axis in fig. 2, 3 and 6). As such, when the fourth adjustment member 170 and the fifth adjustment member 180 are further screwed into the housing 110 along the second axial direction (i.e., the Z-axis in fig. 2, 3 and 6), the two elastic members E5 and E6 are compressed by being pushed by the opposite ends 138 by the bracket 130 moving in the third axial direction (i.e. X axis in fig. 2, 3 and 6) or rotating in the second axial direction (i.e. Z axis in fig. 2, 3 and 6), when the fourth adjusting member 170 and the fifth adjusting member 180 move in the second axial direction (i.e. the Z-axis in fig. 2, 3 and 6) toward the outside of the housing 110, the two elastic members E5 and E6 drive the bracket 130 to move in the opposite direction along the third axial direction (i.e., the X axis in fig. 2, 3 and 6) or rotate in the opposite direction along the second axial direction (i.e., the Z axis in fig. 2, 3 and 6) by the elastic force generated by releasing the compression, so that the two inclined portions 134 of the bracket 130 are kept abutting against the fourth adjusting member 170 and the fifth adjusting member 180. The above description is only an example of the present invention, and the present invention is not limited to the installation position and installation of the two elastic elements E5 and E6, and can be adjusted according to the requirement.

Furthermore, in the embodiment of the present invention, since the carrier 120 is coupled to the bracket 130 through the engagement between the two shaft portions 126 and the two slots 132 of the bracket 130, when the fourth adjusting member 170 and the fifth adjusting member 180 push the bracket 130 to move along the third axial direction (i.e., the X axis in fig. 2, 3 and 6) or rotate along the second axial direction (i.e., the Z axis in fig. 2, 3 and 6) relative to the housing 110, the carrier 120 is driven by the bracket 130 based on the position limitation of the bracket 130 (i.e., the engagement between the two slots 132 and the two shaft portions 126), so that the carrier 120 and the optical element 212 carried on the carrier 120 also move along the third axial direction (i.e., the X axis in fig. 2, 3 and 6) or rotate along the second axial direction (i.e., the Z axis in fig. 2, 3 and 6) relative to the housing 110. Vice versa, that is, when the two elastic members E5 and E6 drive the bracket 130 to move in the opposite direction along the third axial direction (i.e., the X axis in fig. 2, 3 and 6) or rotate in the opposite direction along the second axial direction (i.e., the Z axis in fig. 2, 3 and 6) relative to the housing 110 by the elastic force, the carrier 120 and the optical element 212 carried on the carrier 120 are also driven to move in the opposite direction along the third axial direction (i.e., the X axis in fig. 2, 3 and 6) or rotate in the opposite direction along the second axial direction (i.e., the Z axis in fig. 2, 3 and 6) relative to the housing 110.

In summary, the embodiments of the invention have at least one of the following advantages or effects. The two

light source devices

214a and 214b of the embodiment of the invention are disposed on two substantially perpendicular sides of the housing 110, that is, the light source device 214a is disposed on a side of the housing 110 opposite to the top plate 114, the light source device 214b is disposed on a side of the housing 110 opposite to the front plate 112, the optical element adjusting mechanism 100 pushes the carrier 120 or the bracket 130 along the same axial direction (Z axis) in a space by the first adjusting member 140, the second adjusting member 150, the third adjusting member 160, the fourth adjusting member 170, and the fifth adjusting member 180, so as to move or rotate the carrier 120 or the bracket 130 along the corresponding axial direction, thereby adjusting the first, second, third, fourth, and fifth adjusting members from the same axial direction (from the position of the top plate 114) to change the position of the carrier 120, and further adjusting the optical element 212 carried on the carrier 120 to a precise optimal optical position, that is, i.e., adjusting the optical element 212 to a position at which the light beams emitted by the two

light source modules

214a and 214b can accurately combine the same light beam And (4) placing. Further, since the projection apparatus 200 according to the embodiment of the invention includes the optical element adjustment mechanism 100, the positioning inaccuracy caused by the manufacturing tolerance or the assembly tolerance of the optical element 212 can be improved in the assembly process, and therefore, the projection apparatus 200 according to the embodiment of the invention can adjust the optical element 212 to the precise optimal optical position.

The above description is only a preferred embodiment of the present invention, and the scope of the present invention should not be limited thereby, and all the simple equivalent changes and modifications made by the claims and the specification of the present invention are still within the scope of the present invention. Furthermore, it is not necessary for any embodiment or claim of the invention to address all of the objects, advantages, or features disclosed herein. In addition, the abstract and the title of the invention are provided for assisting the retrieval of patent documents and are not intended to limit the scope of the invention. In addition, the terms "first", "second", and the like in the specification or the claims are only used for naming elements (elements) or distinguishing different embodiments or ranges, and are not used for limiting the upper limit or the lower limit of the number of elements.

Reference numerals

100: optical element adjusting mechanism

110: shell body

112: front plate

114: top board

120: bearing part

122: cam part

124: top part

126: shaft part

128: fork part

130: support frame

132: clamping groove

134: inclined part

136: limiting hole

138: end part

140: first adjusting part

150: second adjusting part

160: third adjusting part

170: fourth adjusting part

180: fifth adjusting part

190: fixing piece

200: projection device

210: light source module

212: optical element

214a, 214 b: light source device

220: light valve

230: projection lens

B: image light beam

E1, E2, E3, E4, E5, E6: elastic piece

IL: illuminating light beam

P: projection light beam

Claims

1. An optical element adjustment mechanism for adjusting an optical element, wherein the optical element adjustment mechanism comprises: a casing, a carrier, a first adjustment member, a second adjustment member and a third adjustment member; wherein,

The carrier is arranged in the housing, the optical element is carried on the carrier and allows the light beam to pass through, the carrier has two opposite cam portions and a top located between the two cam portions, the two cam parts are arranged along the first axial direction;

The first adjusting member and the second adjusting member are respectively disposed on opposite sides of the carrier and abut against the two cam portions, so as to push the carrier and the optical element along the second axial direction moving, the first axial direction is perpendicular to the second axial direction;

The third adjusting member is disposed above the carrier and abuts against the top to push the carrier and the optical element to rotate along the first axis.

2. The optical element adjustment mechanism of claim 1, further comprising:

The bracket is arranged in the casing and has two opposite locking grooves, the bearing member has two shaft portions extending outward from the two cam portions, and the two shaft portions are arranged along the first axial direction, by means of which The bearing member is coupled to the bracket through the two shaft portions passing through the two card slots.

3 . The optical element adjusting mechanism according to claim 2 , wherein the first adjusting member, the second adjusting member and the third adjusting member are respectively penetrated through the second adjusting member along the second axial direction. 4 . The bracket is used to push the carrier to move relative to the bracket and the housing along the second axis or rotate along the first axis.

4. The optical element adjustment mechanism of claim 2, further comprising:

The fourth adjustment piece and the fifth adjustment piece are respectively arranged on opposite sides of the bracket;

The bracket has two opposite inclined parts, the two inclined parts correspond to the two locking grooves, the fourth adjustment member and the fifth adjustment member respectively abut against the two inclined parts of the bracket, so as to push the bracket to move along a third axial direction, and the third axial direction is respectively perpendicular to the first axial direction and the second axial direction.

5 . The optical element adjustment mechanism according to claim 4 , wherein the two locking grooves extend along the second axial direction, the two shaft portions extend along the first axial direction, and the The two shaft portions pass through the two slots correspondingly, allowing the carrier to move relative to the bracket along the second axis or rotate along the first axis, and allow the bracket to drive the carrier and the optical element moves relative to the housing along the third axis.

6 . The optical element adjustment mechanism according to claim 4 , wherein the bracket has a limit hole extending along the third axial direction, and the bracket passes through the limit hole by a fixing member. 7 . and connected to the housing, and the limiting hole allows the bracket to move relative to the housing in the third axial direction or rotate in the second axial direction.

7 . The optical element adjustment mechanism according to claim 4 , wherein the fourth adjustment member and the fifth adjustment member respectively pass through the casing along the second axial direction to push the adjustment member. 8 . The two inclined parts of the bracket move different distances along the third axis, and the bracket drives the carrier and the optical element to rotate relative to the housing along the second axis.

8. The optical element adjustment mechanism of claim 4, further comprising:

Two elastic pieces are correspondingly disposed between opposite end portions of the housing and the bracket, and the two elastic pieces abut against the bracket along the third axis.

9. The optical element adjustment mechanism of claim 1, further comprising:

Two elastic pieces are correspondingly disposed between opposite sides of the casing and the carrier, and the two elastic pieces abut against the carrier along the second axial direction.

10. The optical element adjustment mechanism of claim 4, further comprising:

Two elastic pieces are correspondingly disposed between the casing and the carrier, and corresponding to opposite sides of the top of the carrier, the two elastic pieces abut against the third axis along the third axis carrier.

11. A projection device, characterized in that it comprises a light source module, a light valve and a projection lens, the light source module is used to provide an illumination beam, and the light valve is arranged on the transmission path of the illumination beam to transmit the illumination beam. The illumination beam is converted into an image beam, and the projection lens is disposed on the transmission path of the image beam, wherein the light source module includes:

Optical element;

An optical element adjustment mechanism, comprising: a casing, a carrier, a first adjustment part, a second adjustment part and a third adjustment part; wherein,

The carrier is arranged in the housing, the optical element is carried on the carrier, the carrier has two opposite cam portions and a top located between the two cam portions, the two cam portions arranged along the first axis;

The first adjusting member and the second adjusting member are respectively disposed on opposite sides of the carrier and abut against the two cam portions, so as to push the carrier and the optical element along the second axial direction moving, the first axis is perpendicular to the second axis; and

The third adjusting member is disposed above the carrier and abuts against the top to push the carrier and the optical element to rotate along the first axis; and

Two light source devices are arranged on the casing and correspond to two opposite sides of the optical element respectively, the two light source devices emit light beams respectively, and the two light beams are combined into the same light beam by the optical element to form the illumination beam.

12. The projection device of claim 11, wherein the optical element adjustment mechanism further comprises:

13 . The projection device of claim 12 , wherein the first adjusting member, the second adjusting member and the third adjusting member are respectively inserted through the bracket along the second axial direction. 14 . , so as to push the carrier to move along the second axis or rotate along the first axis relative to the bracket and the housing.

14. The projection device of claim 12, wherein the optical element adjustment mechanism further comprises:

15. The projection device of claim 14, wherein the two engaging grooves extend along the second axial direction, the two shaft portions extend along the first axial direction, and the two shafts extend along the first axial direction. The two slots correspondingly pass through the two slots, allowing the carrier to move relative to the bracket along the second axial direction or rotate along the first axial direction, and allow the bracket to drive the carrier and the The optical element moves relative to the housing along the third axis.

16 . The projection device according to claim 14 , wherein the bracket has a limit hole extending along the third axial direction, and the bracket is connected by a fixing member passing through the limit hole. 17 . to the housing, and the limiting hole allows the bracket to move relative to the housing in the third axial direction or rotate in the second axial direction.

17 . The projection device of claim 14 , wherein the fourth adjusting member and the fifth adjusting member respectively pass through the casing along the second axial direction to push the bracket. 18 . The two inclined parts of the device move different distances along the third axis, and the bracket drives the carrier and the optical element to rotate relative to the housing along the second axis.

18. The projection device of claim 14, wherein the optical element adjustment mechanism further comprises:

19. The projection device of claim 11, wherein the optical element adjustment mechanism further comprises:

20. The projection device of claim 14, wherein the optical element adjustment mechanism further comprises:

Two elastic pieces correspondingly disposed between the housing and the carrier, and corresponding to opposite sides of the top of the carrier, the two elastic pieces abut against the third axis along the third axis carrier.